Improvement in sheet-metal cans



body or sides of the can, and is there soldered.

vity of the tin does not require to be as and the can hence is more durable and y waited gieten @stent @wird WILLIAM M. LEWIS,

Leners Patent No. 98,780, camz Imaam, 11, 1870.

IMPROVEMENT IN 4SHEEIJ/IETAL VCA'NS.

M The Schedule referred to in these Letters Patent and n :akng part 0f the llame To all whom it may concern:

Be it known that I, WILLIAM M. LEWIS, of the city and State of New York, haveinvented an Improyement in Sheet-Metal Cans; and the following is declared to be a correct description thereof'. t

Inthe manufacture of sheet-metal cans, it is usual to turn up aflange around the edges o'f thev sheetmetal of the heads, which ilauge slips outside of the 1n cans made in this' manner, the soldering has t0 be heavy and costly, because the solder is depended 'upon to unite the sheet-metal, to stilen the angles of the can, to largely bear the Weight of the contents pressing upon the lower heador bottom, and to withstand external pressure against the side near the head.

The object of my invention is to unite the sheetmetal at the 'angles of the can, in such a manner that the soldering will only be required for making a tight joint, the weight and strain being taken lalmost entire] y upon the sheet-metal itself.

By'my improvement the can is rendered less costly, because the expense of soldering is less, andthe qualgood, for the mode of manufacture strengthens the can throughout,

reliable. In the drawing- 0 lFigure 1 shows the top a ofthe can in section, and a portion of the sides b,ready to be placed together ;A Figure 2 is a section of the same parts pu't together, clinched by bending, and ready for soldering; Figure 3 shows a portion ofthe sheet-metal, where the same is to be bent to form an angle or corner; and' or NEW YORK, N. Y.

Figure 4 isa plan of such corner.

The end or top a of the can is bent, with ariin around it composed of the incline l and rim-flange 2,.

The sheet-metal' forming the sides of the can is folded at the edges, so that the I'Iretal is `made double, as at 3, anda seat, 4, is also formed for the head or end -of the can to rest upon. Y y

The metal of the seat 4, at the corners or angles of the can, is notched and bent down dat against the side of the can, as seen at 5, in ordeI` that the metal may be bent at theangle, as seen in fig. 4.

The -portions 1, 2, 3, of the end and sides of the l can are pressed together by dies or suitable means, so as to set close and grasp or clinch, as shown in iig. 2, and these parts standing at a slight inclination to the sides, the angle becomes very stiff, and adapted to resist pressure in any direction, and the head or end l is firmly retained, and the sides cannot be pressed in; hence the soldering is required principally to prevent leakage, and very little solder is necessary.

I claim, as my invention- 1. Securing theend of thecan folds `1, 2, 3, 4, of the sheet-metal, in the4 manner specified. l

2. The notched portion 5 of the flange 4, bent'down against the side of the can at the corner o1' angle, combined with the folds l, 2, 3, of the sheet-metal, in the manner specified.

Dated December14, 1869.

W. M. LEWIS,

to-the sides by the- 

